elasticsearch-api/lib/elasticsearch/api/actions/indices/exists_template.rb

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#   http://www.apache.org/licenses/LICENSE-2.0
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# under the License.
#
# This code was automatically generated from the Elasticsearch Specification
# See https://github.com/elastic/elasticsearch-specification
# See Elasticsearch::ES_SPECIFICATION_COMMIT for commit hash.
module Elasticsearch
  module API
    module Indices
      module Actions
        # Check existence of index templates.
        # Get information about whether index templates exist.
        # Index templates define settings, mappings, and aliases that can be applied automatically to new indices.
        # IMPORTANT: This documentation is about legacy index templates, which are deprecated and will be replaced by the composable templates introduced in Elasticsearch 7.8.
        #
        # @option arguments [String, Array<String>] :name A comma-separated list of index template names used to limit the request.
        #  Wildcard (`*`) expressions are supported. (*Required*)
        # @option arguments [Boolean] :flat_settings Indicates whether to use a flat format for the response.
        # @option arguments [Boolean] :local Indicates whether to get information from the local node only.
        # @option arguments [Time] :master_timeout The period to wait for the master node.
        #  If the master node is not available before the timeout expires, the request fails and returns an error.
        #  To indicate that the request should never timeout, set it to `-1`. Server default: 30s.
        # @option arguments [Boolean] :error_trace When set to `true` Elasticsearch will include the full stack trace of errors
        #  when they occur.
        # @option arguments [String] :filter_path Comma-separated list of filters in dot notation which reduce the response
        #  returned by Elasticsearch.
        # @option arguments [Boolean] :human When set to `true` will return statistics in a format suitable for humans.
        #  For example `"exists_time": "1h"` for humans and
        #  `"eixsts_time_in_millis": 3600000` for computers. When disabled the human
        #  readable values will be omitted. This makes sense for responses being consumed
        #  only by machines.
        # @option arguments [Boolean] :pretty If set to `true` the returned JSON will be "pretty-formatted". Only use
        #  this option for debugging only.
        # @option arguments [Hash] :headers Custom HTTP headers
        #
        # @see https://www.elastic.co/docs/api/doc/elasticsearch/operation/operation-indices-exists-template
        #
        def exists_template(arguments = {})
          request_opts = { endpoint: arguments[:endpoint] || 'indices.exists_template' }

          defined_params = [:name].each_with_object({}) do |variable, set_variables|
            set_variables[variable] = arguments[variable] if arguments.key?(variable)
          end
          request_opts[:defined_params] = defined_params unless defined_params.empty?

          raise ArgumentError, "Required argument 'name' missing" unless arguments[:name]

          arguments = arguments.clone
          headers = arguments.delete(:headers) || {}

          body = nil

          _name = arguments.delete(:name)

          method = Elasticsearch::API::HTTP_HEAD
          path   = "_template/#{Utils.listify(_name)}"
          params = Utils.process_params(arguments)

          Utils.rescue_from_not_found do
            perform_request(method, path, params, body, headers, request_opts).status == 200
          end
        end

        alias exists_template? exists_template
      end
    end
  end
end